The shelf stacker analogy has limitations? It doesn't work (or stack up) at all...
I worked in a supermarket in times gone by and I only got paid for what I did. I had no pay whatsoever when I wasn't working and this is most definitely the norm in the supermarkets. The situation at BA is exceptionally fair as regards pay in the market at the moment. Many airlines pay nothing whatsoever to pilots when they're not working (including mine).
This claim is ludicrous and can only contribute to the already clown-like image of BALPA. If this really is the best they can do, I despair.